C++ Program To Print Prime Numbers Upto A User-Specified Range.

This Post Contains A C++ Program To Print Prime Numbers Upto A User-Specified Range With Correct Source Code & Output. This Program Is Written, Compiled & Executed At TurboC3.0 Compiler & Will Help You To Understand The Concept Of 'For-loop', 'While-loop' & 'Nested Loops' From C++ Language. It Is A Well-Structured Program With Proper Comments Which Provides Step-By-Step Description Of Various Features Of The Language In A Simple & Easy-To-Understand Way.


# Note : You Can Simply Copy-Paste The Following Program Or Code Into Compiler For Direct Result.


C++ Program To Print Prime Numbers Upto A User-Specified Range.

# include <iostream.h>
# include <conio.h>

void main()
{
   int range = 0, k, i, j;
   clrscr();
   cout << " Enter Range : ";
   cin >> range;
   cout << " Prime Nos. Upto Range " << range << " Are As Follows : \n ";
   for ( i=1; i<=range; i++ )
   {
      j = 1, k = 0;
      while ( j <= i )
      {
          if ( i % j == 0 )
          k++;
          j++;
      }
      if ( k == 2 )
      {
         cout << i << "\t";
      }
    }
    getch();
}

Output :

Enter Range : 5

Prime Nos. Upto Range 5 Are As Follows :

2        3        5